The generator matrix

 1  0  0  1  1  1  0  1  1  X  0  1  0  1  0  X  1  1  1  1  X  X  1  1  1  X  1  0  0  1  0  X  X  1  X  1  0  1  1  0  1  1  X  0  1  X  1  1  1  0  0  1  1  X  1  1  1  0  X  X  1  0  0  1  0  1  X  X  X  1
 0  1  0  0  1  1  1  0  X  0  1  1  1  1  1  0  X  X X+1 X+1  1  1  0  1  X  1  1  X  1  1  1  1  1  X  X  1  1  1  0  X  X  X  0  1 X+1  1  0  1  X  X  1  0  0  X  1 X+1  0  0  1  1  0  X  1  1  1  1  1  0  1  1
 0  0  1  1  1  0  1  X  1  1  X  X X+1  1  X  1  1  X X+1  X X+1  X  0  0  1 X+1 X+1  1  0 X+1  0  0  1 X+1  1 X+1 X+1 X+1 X+1  1 X+1  0  1  X  0  X  1  X  X  1  1  1  X  1  X  X  X  1  1  0  1  1  0  X  1  1  0  1  1  0
 0  0  0  X  0  0  0  0  0  0  X  X  X  X  0  0  0  X  0  0  0  0  X  X  X  X  X  0  0  X  0  X  X  X  0  0  X  0  X  X  0  0  X  0  X  0  X  0  0  0  0  0  0  X  X  X  0  X  X  X  0  X  0  X  X  X  0  0  0  X
 0  0  0  0  X  0  0  X  0  X  X  0  0  0  0  0  X  0  0  X  0  0  X  X  X  0  X  X  X  0  X  X  0  X  0  0  X  X  X  0  0  X  X  0  0  X  0  0  X  X  0  X  0  0  0  0  0  X  X  0  X  X  0  X  0  X  X  0  0  X
 0  0  0  0  0  X  0  0  X  X  0  0  X  X  X  X  X  0  X  0  X  0  0  X  0  0  0  0  X  X  0  X  0  X  0  0  X  0  X  0  X  X  0  0  X  0  X  X  0  0  X  0  0  X  0  X  0  X  0  X  X  0  0  0  0  X  X  0  X  X
 0  0  0  0  0  0  X  X  X  0  0  X  0  0  0  X  0  0  0  0  0  X  X  X  X  X  0  X  0  X  X  0  0  X  X  0  0  X  X  X  0  X  0  0  X  X  0  X  0  0  X  0  X  0  0  0  0  0  X  0  X  X  X  0  X  0  X  0  X  X

generates a code of length 70 over Z2[X]/(X^2) who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+276x^64+308x^68+237x^72+88x^76+79x^80+20x^84+15x^88

The gray image is a linear code over GF(2) with n=140, k=10 and d=64.
This code was found by Heurico 1.16 in 20 seconds.